/Engine/Source/Editor/CurveEditor/Public/Tree/CurveEditorTree.h
Retrieve all the items stored in this tree irrespective of filter state
const [TMap](API\Runtime\Core\Containers\TMap)< [FCurveEditorTreeItemID](API\Editor\CurveEditor\FCurveEditorTreeItemID), [FCurveEditorTreeItem](API\Editor\CurveEditor\Tree\FCurveEditorTreeItem) > & GetAllItems() const